The interpretation of the term "teens pendejas" depends on the situation and intent. When someone uses the term they should consider if they're using it to degrade or to add humour.
The term "pendejas" originated in some Latin American countries, where it is used as a colloquialism to describe someone who is foolish, silly, or ridiculous. The addition of "teens" to the phrase is a more recent development, likely emerging from online communities and social media platforms.
The "teens pendejas" phenomenon can be seen as a reflection of our society's complex and often contradictory attitudes towards young women. On one hand, the term is often used to mock and belittle, perpetuating negative stereotypes and sexist attitudes. On the other hand, it can also be seen as a form of playful teasing, a way to poke fun at oneself or others in a lighthearted and non-malicious way.